Senders: Mabie, Hamilton Wright
- Hamilton W. Mabie and National Inst. Arts to SLC, 30 May 1905 · New York, N.Y. · UCLC34466 CU-MARK
- National Institute of Arts and Letters per Hamilton W. Mabie to SLC, 30 December 1905 · New York, N.Y. · UCLC35133 CU-MARK
- Hamilton W. Mabie to SLC, 16 October 1907 · New York, N.Y. · UCLC37359 CU-MARK
- Hamilton W. Mabie to SLC, 26 November 1907 · New York, N.Y. · UCLC37461 CU-MARK
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